CN105948159B - A kind of preparation method of heavy metal adsorption filter core - Google Patents
A kind of preparation method of heavy metal adsorption filter core Download PDFInfo
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- CN105948159B CN105948159B CN201610397856.6A CN201610397856A CN105948159B CN 105948159 B CN105948159 B CN 105948159B CN 201610397856 A CN201610397856 A CN 201610397856A CN 105948159 B CN105948159 B CN 105948159B
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- filter core
- heavy metal
- maceration extract
- metal adsorption
- water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
Abstract
The present invention relates to a kind of preparation methods of heavy metal adsorption filter core, heavy metal adsorption filter core involved in this method is to prepare heavy metal adsorption functional filter element using polymerization is cross-linked in situ using commercial filter core polypropylene, polysulfones, Kynoar, polyacrylonitrile, active carbon filter core as carrier.Method by impregnating, spraying coats heavy metal ion adsorbed functional layer in the fiber surface of commercial filter core, heavy metal adsorption filter core is obtained after drying, cross-linked polymeric and enhances the heavy metal ion adsorbed performance of filter core compared to conventional commercial filter core.
Description
Technical field
The invention belongs to Advanced Treatment of Drinking Water fields, are related to a kind of preparation method of heavy metal adsorption filter core.
Background technology
The problem of Drinking Water in China heavy metal pollution is the major issue of party's life security.It is heavy metal-polluted in drinking water
The characteristics of there is concealment, chronicity and irreversibilities is contaminated, it is big different with the pollution of other types.Heavy metal poisoning initial stage
Symptom is very slight, it is easy to be ignored by people, but long-term harm is very big.China's water quality heavy metal pollution is serious,
Main cause is, the especially sewage discharge of the developing of the construction, mining industry in chemical plant, littoral factory related with industrial expansion
Deng all causing different degrees of heavy metal pollution to water source.Heavy metal cannot be decomposed in water, in animals and plants and human body
It is easy accumulation, long-term drinking contains the water quality of heavy metal, has to the health of human body and seriously threatens.Heavy metal can cause the head of people
Bitterly, dizzy, insomnia, arthralgia, especially to the cell of digestive system, urinary system, internal organs, skin, bone, nerve damage pole
It is serious.It is in particular in the following：Copper can lead to jaundice pancreatitis, red blood cell poisoning, esophagus problem and anemia；Lead mistake
Amount can lead to nephrosis, neuralgia, leprosy etc.；Arsenic can cause neuritis, acute poisoning even dead；Cadmium can excessively lead to bone
Deformation, lumbago, poisoning, red blood cell lesion etc.；Mercury can lead to neurotoxia, abalienation, madness, spasm or even death；
Chromium can lead to kidney slow poisoning, cause kidney disorder, cancer.
In existing drinking water treatment technology, reverse osmosis and ion exchange technique is to handle the core technology of heavy metal pollution,
But reverse osmosis cost is higher, ion exchange resin regeneration method it is complicated it is of high cost limit being widely used for this two technologies,
And the requirement due to people to drinking water safety is higher and higher, heavy metal treatment technology in the drinking water of exploitation efficiently, inexpensive
With the extensive market demand and good application prospect.
Invention content
Present invention aims at provide a kind of preparation method of heavy metal adsorption filter core, the heavy metal involved in this method
Absorption filter element is to prepare heavy metal adsorption functional filter element using polymerization is cross-linked in situ using commercial filter core as carrier.By impregnating,
The method of spraying coats heavy metal ion adsorbed functional layer in the fiber surface of commercial filter core, is obtained after drying, cross-linked polymeric
Heavy metal adsorption filter core enhances the heavy metal ion adsorbed performance of filter core compared to conventional commercial filter core.
A kind of preparation method of heavy metal adsorption filter core of the present invention, heavy metal adsorption is prepared using situ aggregation method
Functional coating filter core, specific preparation process are as follows：
A, filter core pre-processes：It is polypropylene, polysulfones, Kynoar, polyacrylonitrile or active carbon filter core by commercial filter core
Washing, after alcohol is washed, 30-80 DEG C of drying for standby of temperature；
B, pretreatment fluid is prepared：It is that polyacrylic acid, polyvinylpyrrolidone or polyethylene glycol are soluble in water by pretreating agent,
It is configured to the treatment fluid of a concentration of 1-10%；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 1-5h, filter core after being handled；
D, maceration extract is prepared：It is that cellulose acetate, polyacrylic acid, polyacrylonitrile or polyvinyl alcohol are dissolved in hot water by coating agent
In, it is configured to the maceration extract I of a concentration of 1-10%；It is again food-grade chitosan, food-grade sodium alginate or food by functional agent
Grade hydroxypropyl cellulose is soluble in water, is configured to the maceration extract II of a concentration of 1-10%；Maceration extract I and maceration extract II is fully mixed
It closes, and the crosslinking agent that 1-10% is added is Geniposide, epoxychloropropane, N, N- methylene-bisacrylamides or glutaraldehyde, is obtained
Maceration extract III, then catalyst will be added in maceration extract III as methanol 0.05-0.2% and acetic acid 0.05-0.2%；
E, filter core immerses rapidly in step d after being handled in step c, stands 1-5h, filter core after being impregnated；
F, filter core after step e dipping is dry under the conditions of 30-120 DEG C of temperature, cross-linked polymeric according to a conventional method；
G, e and f steps are repeated 3-10 times, obtains heavy metal adsorption filter core.
A kind of the characteristics of preparation method of heavy metal adsorption filter core of the present invention, the filter core, mainly has：(1) with commercialization
Filter core：Polypropylene (PP) filter core, polysulfones (PES) filter core, Kynoar (PVDF) filter core, polyacrylonitrile (PAN) filter core or work
Property filtration core be carrier；(2) heavy metal adsorption functional layer is coated by being cross-linked in situ polymerization；(3) functional layer has good
Heavy metal adsorption performance.
The polymerization that is cross-linked in situ in the present invention is to prepare the common method of heavy metal absorbent, and those skilled in the art can
With the technical solution provided according to case study on implementation of the present invention, technical inspiration is obtained, using different proportioning and raw material, is had
There is the heavy metal adsorption filter core of said function.
Advantageous effect：The preparation method of a kind of heavy metal adsorption filter core of the present invention, by being cross-linked in situ polymerization
In commercial filter core fiber surface coating heavy metal adsorption functional layer the heavy metal of filter core is enhanced compared to conventional commercial filter core
Ionic adsorption performance.
The filter core carrier used in the embodiment of the present invention is commercial filter core -- polypropylene (PP), polysulfones (PES), polyvinylidene fluoride
Alkene (PVDF), polyacrylonitrile (PAN) or active carbon filter core, and by being cross-linked in situ polymerization, heavy metal adsorption filter core is obtained, by
This infers：When using other similar bearers, the technique effect of the present invention can be also realized.
Specific implementation mode
Following non-limiting embodiments can make those skilled in the art be more fully understood the present invention, but not with
Any mode limits the present invention；
Embodiment 1
A, filter core pre-processes：It is the 200mL washings of polypropylene (PP) filter core by commercial filter core, after 200mL alcohol is washed, 30 DEG C of temperature
Drying for standby；
B, pretreatment fluid is prepared：It is that polyacrylic acid is soluble in water by pretreating agent, is configured to the processing that volumetric concentration is 1%
Liquid；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 1h, filter core after being handled；
D, maceration extract is prepared：It is that cellulose acetate is dissolved in hot water by coating agent, is configured to the dipping that volumetric concentration is 1%
Liquid I；It is again that food-grade chitosan is soluble in water by functional agent, is configured to a concentration of 1% maceration extract II；By maceration extract I and leaching
Stain liquid II is sufficiently mixed, and 1% crosslinking agent is added as Geniposide, obtains maceration extract III, then will be added and be catalyzed in maceration extract III
Agent is methanol 0.05% and acetic acid 0.05%；
E, filter core immerses rapidly in step d after being handled in step c, stands 1-5h, filter core after being impregnated；
F, filter core after step e dipping is dry under the conditions of 30 DEG C of temperature, cross-linked polymeric according to a conventional method；
G, e and f steps 3 time are repeated, heavy metal adsorption polypropylene (PP) filter core is obtained.
Embodiment 2
A, filter core pre-processes：It is the 200mL washings of polysulfones (PAA) filter core by commercial filter core, after 200mL alcohol is washed, temperature 50 C
Drying for standby；
B, pretreatment fluid is prepared：It is that polyvinylpyrrolidone (PVP) is soluble in water by pretreating agent, is configured to volumetric concentration
For 3% treatment fluid；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 2h, filter core after being handled；
D, maceration extract is prepared：It is that polyacrylic acid is dissolved in hot water by coating agent, is configured to the maceration extract that volumetric concentration is 3%
Ⅰ；It is again that food-grade sodium alginate is soluble in water by functional agent, is configured to the maceration extract II that volumetric concentration is 3%；By maceration extract I
It is sufficiently mixed with maceration extract II, and 5% crosslinking agent is added as epoxychloropropane, obtain maceration extract III, then will be in maceration extract III
It is methanol 0.1% and acetic acid 0.1% that catalyst, which is added,；
E, filter core immerses rapidly in step d after being handled in step c, stands 2h, filter core after being impregnated；
F, filter core is dry under the conditions of temperature 50 C after impregnating step e, according to a conventional method cross-linked polymeric；
G, e and f steps 5 time are repeated, heavy metal adsorption polysulfones (PES) filter core is obtained.
Embodiment 3
A, filter core pre-processes：It is the 200mL washings of Kynoar (PVDF) filter core by commercial filter core, after 200mL alcohol is washed, temperature
Spend 40 DEG C of drying for standby；
B, pretreatment fluid is prepared：It is that polyethylene glycol (PEG) is soluble in water by pretreating agent, it is 5% to be configured to volumetric concentration
Treatment fluid；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 3h, filter core after being handled；
D, maceration extract is prepared：It is that polyacrylonitrile (PAN) is dissolved in hot water by coating agent, it is 5% to be configured to volumetric concentration
Maceration extract I；It is again that food-grade hydroxypropyl cellulose is soluble in water by functional agent, is configured to the maceration extract II that volumetric concentration is 5%；
Maceration extract I and maceration extract II are sufficiently mixed, and 5% crosslinking agent is added as N, N- methylene-bisacrylamides are impregnated
Liquid III, then catalyst will be added in maceration extract III as methanol 0.08% and acetic acid 0.08%；
E, filter core immerses rapidly in step d after being handled in step c, stands 3h, filter core after being impregnated；
F, filter core after step e dipping is dry under the conditions of 600 DEG C of temperature, cross-linked polymeric according to a conventional method；
G, e and f steps 7 time are repeated, heavy metal adsorption Kynoar (PVDF) filter core is obtained.
Embodiment 4
A, filter core pre-processes：It is the 200mL washings of polyacrylonitrile (PAN) filter core by commercial filter core, after 200mL alcohol is washed, temperature
70 DEG C of drying for standby；
B, pretreatment fluid is prepared：It is that polyacrylic acid (PAA) is soluble in water by pretreating agent, it is 8% to be configured to volumetric concentration
Treatment fluid；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 4h, filter core after being handled；
D, maceration extract is prepared：It is that polyvinyl alcohol is dissolved in hot water by coating agent, is configured to the maceration extract that volumetric concentration is 8%
Ⅰ；It is again that food-grade chitosan is soluble in water by functional agent, is configured to the maceration extract II that volumetric concentration is 8%；By I He of maceration extract
Maceration extract II is sufficiently mixed, and 8% crosslinking agent is added as glutaraldehyde, obtains maceration extract III, then urge being added in maceration extract III
Agent is methanol 0.15% and acetic acid 0.15%；
E, filter core immerses rapidly in step d after being handled in step c, stands 5h, filter core after being impregnated；
F, filter core after step e dipping is dry under the conditions of 100 DEG C of temperature, cross-linked polymeric according to a conventional method；
G, e and f steps 8 time are repeated, heavy metal adsorption polyacrylonitrile (PAN) filter core is obtained.
Embodiment 5
A, filter core pre-processes：It is active carbon filter core 200mL washings by commercial filter core, after 200mL alcohol is washed, 80 DEG C of dryings of temperature
It is spare；
B, pretreatment fluid is prepared：It is that polyacrylic acid (PAA) is soluble in water by pretreating agent, is configured to a concentration of 10% place
Manage liquid；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 5h, filter core after being handled；
D, maceration extract is prepared：It is that polyvinyl alcohol (PVA) is dissolved in hot water by coating agent, is configured to a concentration of 10% dipping
Liquid I；It is again that food-grade chitosan is soluble in water by functional agent, is configured to a concentration of 10% maceration extract II；By maceration extract I and leaching
Stain liquid II is sufficiently mixed, and 10% crosslinking agent is added as glutaraldehyde, obtains maceration extract III, then will be added and be catalyzed in maceration extract III
Agent is methanol 0.2% and acetic acid 0.2%；
E, filter core immerses rapidly in step d after being handled in step c, stands 5h, filter core after being impregnated；
F, by filter core after step e dipping under the conditions of 120 DEG C of temperature dry, cross-linked polymeric；
G, e and f steps 10 time are repeated, the filter core of heavy metal adsorption active carbon filter core is obtained.
Embodiment 6
By any one heavy metal adsorption filter core of embodiment 1-5, it is assembled into the rearmost end of commercial water purifier, at terminal
Reason；Commercial water purifier is mainly made of four parts --- PP cottons filter, active carbon filter, ultrafilter, activated carbon depth-type filtration
Device；To contain Hg2+The tap water that ion concentration is 5ppb is target treatment fluid, will contain Hg with constant flow pump2+Ion squeeze into filter into
The mouth of a river, flow velocity 0.5L/h carry out continuum micromeehanics processing；The Hg in water outlet continuous sampling, continuous monitoring water outlet2+Ion is dense
Degree；Enter water Hg2+Ion concentration is 5ppb, goes out water removal rate and reaches 90%, water outlet reaches national standards for drinking water quality.
Claims (1)
1. a kind of preparation method of heavy metal adsorption filter core, it is characterised in that prepare heavy metal adsorption function using situ aggregation method
Coating filter core, specific preparation process are as follows：
A, filter core pre-processes：It is that polypropylene, polysulfones, Kynoar, polyacrylonitrile or active carbon filter core are washed by commercial filter core,
After alcohol is washed, 30-80 DEG C of drying for standby of temperature；
B, pretreatment fluid is prepared：It is that polyacrylic acid, polyvinylpyrrolidone or polyethylene glycol are soluble in water by pretreating agent, prepares
At the treatment fluid of a concentration of 1-10%；
C, by treated in step a, filter core immerses in the treatment fluid in step b, stands 1-5h, filter core after being handled；
D, maceration extract is prepared：It is that cellulose acetate, polyacrylic acid, polyacrylonitrile or polyvinyl alcohol are dissolved in hot water by coating agent,
It is configured to the maceration extract I of a concentration of 1-10%；It is again food-grade chitosan, food-grade sodium alginate or food-grade hydroxyl by functional agent
Propyl cellulose is soluble in water, is configured to the maceration extract II of a concentration of 1-10%；Maceration extract I and maceration extract II are sufficiently mixed, and
The crosslinking agent that 1-10% is added is Geniposide, epoxychloropropane, N, N- methylene-bisacrylamides or glutaraldehyde, obtains maceration extract
III, then catalyst will be added in maceration extract III as methanol 0.05-0.2% and acetic acid 0.05-0.2%；
E, filter core immerses rapidly in step d after being handled in step c, stands 1-5h, filter core after being impregnated；
F, filter core after step e dipping is dry under the conditions of 30-120 DEG C of temperature, cross-linked polymeric according to a conventional method；
G, e and f steps are repeated 3-10 times, obtains heavy metal adsorption filter core.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108067193A (en) * | 2016-11-15 | 2018-05-25 | 辽宁石油化工大学 | It is a kind of using sodium alginate and polyvinyl alcohol as the preparation method of the chitosan of carrier |
| CN107459158B (en) * | 2017-09-07 | 2023-10-31 | 广东暖洋溢科技有限公司 | Sterilization and chlorine removal environment-friendly water treatment for drinking water device |
| CN109499552A (en) * | 2018-12-20 | 2019-03-22 | 天津科技大学 | A kind of Novel dephosphorization bacteriostatic PP filter core and preparation method thereof |
| CN109745775A (en) * | 2019-02-28 | 2019-05-14 | 西部宝德科技股份有限公司 | A kind of pollution of oil resistant, adsorbable iron ion stainless steel filter core preparation method |
| CN113245360A (en) * | 2021-06-29 | 2021-08-13 | 什邡市优禾工业产品设计工作室 | Ecological soil remediation method |
| CN113880153A (en) * | 2021-09-26 | 2022-01-04 | 宁波方太厨具有限公司 | Preparation method of filter element with heavy metal adsorption performance |
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|---|---|---|---|---|
| CN1110623A (en) * | 1994-12-09 | 1995-10-25 | 天津市长城过滤设备厂 | Short fibre sintered filter core and its preparation technology |
| CN1305861A (en) * | 2000-12-12 | 2001-08-01 | 天津市超净过滤技术研究所 | Refractory fibres sintered filter medium (board, plate, or core) and its preparing process |
| JP4920459B2 (en) * | 2007-03-13 | 2012-04-18 | いすゞ自動車株式会社 | Filter element modification method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110623A (en) * | 1994-12-09 | 1995-10-25 | 天津市长城过滤设备厂 | Short fibre sintered filter core and its preparation technology |
| CN1305861A (en) * | 2000-12-12 | 2001-08-01 | 天津市超净过滤技术研究所 | Refractory fibres sintered filter medium (board, plate, or core) and its preparing process |
| JP4920459B2 (en) * | 2007-03-13 | 2012-04-18 | いすゞ自動車株式会社 | Filter element modification method |
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